annotate util.c @ 508:ede48935f2b3
added the new dotile as described on ml
| author |
Anselm R. Garbe <arg@10kloc.org> |
| date |
Fri, 29 Sep 2006 16:22:20 +0200 |
| parents |
9d23330a5268 |
| children |
651f2c868b31 |
| rev |
line source |
|
garbeam@2
|
1 /*
|
|
garbeam@2
|
2 * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
|
|
garbeam@2
|
3 * See LICENSE file for license details.
|
|
garbeam@2
|
4 */
|
|
garbeam@76
|
5 #include "dwm.h"
|
|
garbeam@2
|
6 #include <stdarg.h>
|
|
garbeam@2
|
7 #include <stdio.h>
|
|
garbeam@2
|
8 #include <stdlib.h>
|
|
garbeam@5
|
9 #include <sys/wait.h>
|
|
garbeam@5
|
10 #include <unistd.h>
|
|
garbeam@5
|
11
|
|
garbeam@84
|
12 /* extern */
|
|
garbeam@76
|
13
|
|
garbeam@3
|
14 void *
|
|
arg@461
|
15 emallocz(unsigned int size) {
|
|
garbeam@3
|
16 void *res = calloc(1, size);
|
|
arg@123
|
17
|
|
garbeam@3
|
18 if(!res)
|
|
arg@325
|
19 eprint("fatal: could not malloc() %u bytes\n", size);
|
|
garbeam@3
|
20 return res;
|
|
garbeam@3
|
21 }
|
|
garbeam@3
|
22
|
|
garbeam@3
|
23 void
|
|
arg@461
|
24 eprint(const char *errstr, ...) {
|
|
garbeam@76
|
25 va_list ap;
|
|
arg@123
|
26
|
|
garbeam@76
|
27 va_start(ap, errstr);
|
|
garbeam@76
|
28 vfprintf(stderr, errstr, ap);
|
|
garbeam@76
|
29 va_end(ap);
|
|
garbeam@92
|
30 exit(EXIT_FAILURE);
|
|
garbeam@76
|
31 }
|
|
garbeam@76
|
32
|
|
arg@270
|
33 void *
|
|
arg@461
|
34 erealloc(void *ptr, unsigned int size) {
|
|
arg@270
|
35 void *res = realloc(ptr, size);
|
|
arg@270
|
36 if(!res)
|
|
arg@325
|
37 eprint("fatal: could not malloc() %u bytes\n", size);
|
|
arg@270
|
38 return res;
|
|
arg@270
|
39 }
|
|
arg@270
|
40
|
|
garbeam@76
|
41 void
|
|
arg@461
|
42 spawn(Arg *arg) {
|
|
arg@189
|
43 static char *shell = NULL;
|
|
arg@123
|
44
|
|
arg@189
|
45 if(!shell && !(shell = getenv("SHELL")))
|
|
arg@189
|
46 shell = "/bin/sh";
|
|
arg@189
|
47
|
|
arg@189
|
48 if(!arg->cmd)
|
|
garbeam@5
|
49 return;
|
|
arg@471
|
50 /* The double-fork construct avoids zombie processes and keeps the code
|
|
arg@471
|
51 * clean from stupid signal handlers. */
|
|
garbeam@5
|
52 if(fork() == 0) {
|
|
garbeam@5
|
53 if(fork() == 0) {
|
|
garbeam@5
|
54 if(dpy)
|
|
garbeam@5
|
55 close(ConnectionNumber(dpy));
|
|
garbeam@9
|
56 setsid();
|
|
arg@338
|
57 execl(shell, shell, "-c", arg->cmd, (char *)NULL);
|
|
arg@217
|
58 fprintf(stderr, "dwm: execl '%s -c %s'", shell, arg->cmd);
|
|
garbeam@5
|
59 perror(" failed");
|
|
garbeam@5
|
60 }
|
|
arg@138
|
61 exit(0);
|
|
garbeam@5
|
62 }
|
|
garbeam@5
|
63 wait(0);
|
|
garbeam@5
|
64 }
|
